Active galactic nuclei; Balmer lines; Dusty molecular torus; Dusty plasmas; Large viewing angle; Torus region; Atomic and Molecular Physics, and Optics
Abstract :
[en] Abstract: For many years we have known that dust in the form of a dusty-molecular torus is responsible for the obscuration in active galactic nuclei (AGN) at large viewing angles and, thus, for the widely used phenomenological classification of AGN. Recently, we gained new observational and theoretical insights into the geometry of the torus region and the role of dust in the dynamics of emerging outflows and failed winds. We will briefly touch on all these aspects and provide a more detailed update of our dust-based model (FRADO—Failed Radiatively Accelerated Dusty Outflow) capable of explaining the processes of formation of Balmer lines in AGN. Graphic abstract: [Figure not available: see fulltext.]
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Czerny, Bożena ; Center for Theoretical Physics, Polish Academy of Sciences, Warsaw, Poland
Zajaček, Michal; Department of Theoretical Physics and Astrophysics, Faculty of Science, Masaryk University, Brno, Czech Republic
Naddaf Moghaddam, Mohammad Hassan ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Space sciences, Technologies and Astrophysics Research (STAR) ; Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Warsaw, Poland ; Center for Theoretical Physics, Polish Academy of Sciences, Warsaw, Poland
Sniegowska, Marzena; Center for Theoretical Physics, Polish Academy of Sciences, Warsaw, Poland ; Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Warsaw, Poland ; School of Physics and Astronomy, Tel Aviv University, Tel Aviv, Israel
Panda, Swayamtrupta; Laboratório Nacional de Astrofísica, MCTI, Itajubá, Brazil
Różanska, Agata; Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Warsaw, Poland
Adhikari, Tek P.; Inter University Center for Astronomy and Astrophysics, Pune, India
Pandey, Ashwani; Center for Theoretical Physics, Polish Academy of Sciences, Warsaw, Poland
Jaiswal, Vikram Kumar; Center for Theoretical Physics, Polish Academy of Sciences, Warsaw, Poland
Karas, Vladimír; Astronomical Institute, Czech Academy of Sciences, Prague, Czech Republic
Borkar, Abhijeet; Astronomical Institute, Czech Academy of Sciences, Prague, Czech Republic
Martínez-Aldama, Mary Loli; Departamento de Astronomía, Universidad de Chile, Santiago, Chile
Prince, Raj; Center for Theoretical Physics, Polish Academy of Sciences, Warsaw, Poland
This project has received funding from the European Research Council (ERC) under the European Union\u2019s Horizon 2020 research and innovation program (Grant Agreement No. [951549]). The project was partially supported by the Polish Funding Agency National Science Centre, project 2017/26/A/ST9/00756 (MAESTRO 9), and MNiSW grant DIR/WK/2018/12. MLM-A acknowledges financial support from Millennium Nucleus NCN (TITANs). VK acknowledges the Czech Science Foundation Project No. 21-06825X \u201CAccreting black holes in the new era of X-ray polarimetry missions\u201D. SP acknowledges financial support from the Conselho Nacional de Desenvolvimento Cient\u00EDfico e Tecnol\u00F3gico (CNPq) Fellowship (164753/2020-6). MS acknowledges the financial support of the Polish Funding Agency National Science Centre 2021/41/N/ST9/02280 (PRELUDIUM 20). MZ acknowledges the financial support of the GA\u010CR EXPRO Grant No. 21-13491X \u201CExploring the Hot Universe and Understanding Cosmic Feedback\u201D. The authors also acknowledge the Czech-Polish mobility program (M\u0160MT 8J20PL037 and NAWA PPN/BCZ/2019/1/00069), the OPUS-LAP/GA\u010CR-LA bilateral project (UMO-2021/43/I/ST9/01352 and GF22-04053 L), and the Czech Ministry of Education, Youth and Sports Research Infrastructure (LM2023047).This project has received funding from the European Research Council (ERC) under the European Union\u2019s Horizon 2020 research and innovation program (Grant Agreement No. [951549]). The project was partially supported by the Polish Funding Agency National Science Centre, project 2017/26/A/ST9/00756 (MAESTRO 9), and MNiSW grant DIR/WK/2018/12. MLM-A acknowledges financial support from Millennium Nucleus NCN19 _ 058 (TITANs). VK acknowledges the Czech Science Foundation Project No. 21-06825X \u201CAccreting black holes in the new era of X-ray polarimetry missions\u201D. SP acknowledges financial support from the Conselho Nacional de Desenvolvimento Cient\u00EDfico e Tecnol\u00F3gico (CNPq) Fellowship (164753/2020-6). MS acknowledges the financial support of the Polish Funding Agency National Science Centre 2021/41/N/ST9/02280 (PRELUDIUM 20). MZ acknowledges the financial support of the GA\u010CR EXPRO Grant No. 21-13491X \u201CExploring the Hot Universe and Understanding Cosmic Feedback\u201D. The authors also acknowledge the Czech-Polish mobility program (M\u0160MT 8J20PL037 and NAWA PPN/BCZ/2019/1/00069), the OPUS-LAP/GA\u010CR-LA bilateral project (UMO-2021/43/I/ST9/01352 and GF22-04053\u00A0L), and the Czech Ministry of Education, Youth and Sports Research Infrastructure (LM2023047).
M.A. Abramowicz, B. Czerny, J.P. Lasota et al., Slim accretion disks. Astrophys. J. 332, 646 (1988). 10.1086/166683 DOI: 10.1086/166683
M.A. Abramowicz, X. Chen, S. Kato et al., Thermal Equilibria of Accretion Disks. ApJ 438, L37 (1995). 10.1086/187709. arXiv:astro-ph/9409018 [astro-ph] DOI: 10.1086/187709
T.P. Adhikari, A. Różańska, M. Sobolewska et al., Absorption measure distribution in Mrk 509. ApJ 815(2), 83 (2015). 10.1088/0004-637X/815/2/83. arXiv:1507.04035 [astro-ph.GA] DOI: 10.1088/0004-637X/815/2/83
T.P. Adhikari, A. Różańska, B. Czerny et al., The intermediate-line region in active galactic nuclei. ApJ 831(1), 68 (2016). 10.3847/0004-637X/831/1/68. arXiv:1606.00284 [astro-ph.GA] DOI: 10.3847/0004-637X/831/1/68
T.P. Adhikari, A. Różańska, K. Hryniewicz et al., What shapes the absorption measure distribution in AGN outflows? ApJ 881(1), 78 (2019). 10.3847/1538-4357/ab2dfc. arXiv:1812.05154 [astro-ph.GA] DOI: 10.3847/1538-4357/ab2dfc
D.K. Aitken, P.F. Roche, 8–13 mu-m spectrophotometry of galaxies - IV. Six more Seyferts and 3C 345. MNRAS 213, 777–788 (1985). https://doi.org/10.1093/mnras/213.4.777
D.K. Aitken, D. Gezari, C.H. Smith et al., Polarimetric imaging of the galactic center at 12.4 microns: the detailed magnetic field structure in the Northern arm and east-west bar. ApJ 380, 419 (1991). 10.1086/170600
D.K. Aitken, C.H. Smith, T.J.T. Moore et al., Mid-infrared polarization studies of SgrA: a three-dimensional study of the central parsec. MNRAS 299(3), 743–752 (1998). 10.1046/j.1365-8711.1998.01807.x DOI: 10.1046/j.1365-8711.1998.01807.x
D. Alloin, D. Pelat, M. Phillips et al., Recent spectral variations in the active nucleus of NGC 1566. ApJ 288, 205–220 (1985). 10.1086/162783 DOI: 10.1086/162783
R.R.J. Antonucci, J.S. Miller, Spectropolarimetry and the nature of NGC 1068. ApJ 297, 621–632 (1985). 10.1086/163559 DOI: 10.1086/163559
D. Asmus, New evidence for the ubiquity of prominent polar dust emission in AGN on tens of parsec scales. MNRAS 489(2), 2177–2188 (2019). 10.1093/mnras/stz2289. arXiv:1908.03552 [astro-ph.GA] DOI: 10.1093/mnras/stz2289
D. Asmus, S.F. Hönig, P. Gandhi, The subarcsecond mid-infrared view of local active galactic nuclei. III. Polar dust emission. ApJ 822(2), 109 (2016). 10.3847/0004-637X/822/2/109. arXiv:1603.02710 [astro-ph.GA] DOI: 10.3847/0004-637X/822/2/109
F.K. Baganoff, Y. Maeda, M. Morris et al., Chandra X-ray spectroscopic imaging of sagittarius A* and the central parsec of the galaxy. ApJ 591(2), 891–915 (2003). https://doi.org/10.1086/375145. arXiv:astro-ph/0102151 [astro-ph]
R. Barvainis, Hot dust and the near-infrared bump in the continuum spectra of quasars and active galactic nuclei. ApJ 320, 537 (1987). 10.1086/165571 DOI: 10.1086/165571
A. Baskin, A. Laor, What controls the [OIII] λ 5007 line strength in active galactic nuclei? MNRAS 358(3), 1043–1054 (2005). https://doi.org/10.1111/j.1365-2966.2005.08841.x. arXiv:astro-ph/0501436 [astro-ph]
A. Baskin, A. Laor, Dust inflated accretion disc as the origin of the broad line region in active galactic nuclei. MNRAS 474(2), 1970–1994 (2018). 10.1093/mnras/stx2850. arXiv:1711.00025 [astro-ph.GA] DOI: 10.1093/mnras/stx2850
A. Baskin, A. Laor, Radiation pressure confinement - V. The predicted free-free absorption and emission in active galactic nuclei. MNRAS 508(1), 680–697 (2021). https://doi.org/10.1093/mnras/stab2555. arXiv:2109.03313 [astro-ph.GA]
E.E. Becklin, I. Gatley, M.W. Werner, Far-infrared observations of Sagittarius A-the luminosity and dust density in the central parsec of the galaxy. ApJ 258, 135–142 (1982). 10.1086/160060 DOI: 10.1086/160060
M.C. Begelman, C.F. McKee, Global effects of thermal conduction on two-phase media. ApJ 358, 375 (1990). 10.1086/168994 DOI: 10.1086/168994
A.M. Beloborodov, Accretion Disk Models. In: Poutanen J, Svensson R (eds) High Energy Processes in Accreting Black Holes, p 295, (1999) https://doi.org/10.48550/arXiv.astro-ph/9901108, arXiv:astro-ph/9901108
N. Bennert, B. Jungwiert, S. Komossa et al., Size and properties of the narrow-line region in Seyfert-1 galaxies from spatially-resolved optical spectroscopy. A &A 459(1), 55–69 (2006). https://doi.org/10.1051/0004-6361:20065477. arXiv:astro-ph/0606367 [astro-ph]
M.C. Bentz, J.L. Walsh, A.J. Barth et al., The lick AGN monitoring project: broad-line region radii and black hole masses from reverberation mapping of H β. ApJ 705(1), 199–217 (2009). 10.1088/0004-637X/705/1/199. arXiv:0908.0003 [astro-ph.CO] DOI: 10.1088/0004-637X/705/1/199
M.C. Bentz, K.D. Denney, C.J. Grier et al., The low-luminosity end of the radius-luminosity relationship for active galactic nuclei. ApJ 767(2), 149 (2013). 10.1088/0004-637X/767/2/149. arXiv:1303.1742 [astro-ph.CO] DOI: 10.1088/0004-637X/767/2/149
M. Berton, E. Järvelä, Jet-induced feedback in the [O III] lines of early evolution stage active galactic nuclei. Universe 7(6), 188 (2021). 10.3390/universe7060188. arXiv:2106.01076 [astro-ph.GA] DOI: 10.3390/universe7060188
H.K. Bhat, N.B. Sabha, M. Zajaček et al., Mid-infrared studies of dusty sources in the galactic center. ApJ 929(2), 178 (2022). 10.3847/1538-4357/ac6106. arXiv:2203.16727 [astro-ph.GA] DOI: 10.3847/1538-4357/ac6106
S. Bianchi, R. Antonucci, A. Capetti et al., HST unveils a compact mildly relativistic broad-line region in the candidate true type 2 NGC 3147. MNRAS 488(1), L1–L5 (2019). 10.1093/mnrasl/slz080. arXiv:1905.09627 [astro-ph.HE] DOI: 10.1093/mnrasl/slz080
S. Bianchi, M. Chiaberge, A. Laor et al., NGC 3147: a prototypical low-luminosity active galactic nucleus with double-peaked optical and ultraviolet lines. MNRAS 516(4), 5775–5784 (2022). 10.1093/mnras/stac2290. arXiv:2209.01807 [astro-ph.HE] DOI: 10.1093/mnras/stac2290
S. Bianchi, V. Mainieri, P. Padovani, Active Galactic Nuclei and their demography through cosmic time. (2022b) arXiv e-prints https://doi.org/10.48550/arXiv.2203.16846, arXiv:2203.16846 [astro-ph.HE]
R.C. Bohlin, B.D. Savage, J.F. Drake, A survey of interstellar H I from Lalpha absorption measurements. II. ApJ 224, 132–142 (1978). 10.1086/156357 DOI: 10.1086/156357
H. Bondi, On spherically symmetrical accretion. MNRAS 112, 195 (1952). 10.1093/mnras/112.2.195 DOI: 10.1093/mnras/112.2.195
A. Borkar, T.P. Adhikari, A. Różańska et al., The multiphase environment in the centre of Centaurus A. MNRAS 500(3), 3536–3551 (2021). 10.1093/mnras/staa3515. arXiv:2006.01099 [astro-ph.GA] DOI: 10.1093/mnras/staa3515
R.M. Buchholz, G. Witzel, R. Schödel et al., Adaptive-optics assisted near-infrared polarization measurements of sources in the Galactic center. A &A 534, A117 (2011). 10.1051/0004-6361/201117300. arXiv:1107.3781 [astro-ph.GA] DOI: 10.1051/0004-6361/201117300
R.M. Buchholz, G. Witzel, R. Schödel et al., Ks- and Lp-band polarimetry on stellar and bow-shock sources in the Galactic center. A &A 557, A82 (2013). 10.1051/0004-6361/201220338. arXiv:1308.0956 [astro-ph.GA] DOI: 10.1051/0004-6361/201220338
D. Calzetti, L. Armus, R.C. Bohlin et al., The dust content and opacity of actively star-forming galaxies. ApJ 533(2), 682–695 (2000). https://doi.org/10.1086/308692. arXiv:astro-ph/9911459 [astro-ph]
M. Cantiello, A.S. Jermyn, D.N.C. Lin, Stellar evolution in AGN disks. ApJ 910(2), 94 (2021). 10.3847/1538-4357/abdf4f. arXiv:2009.03936 [astro-ph.SR] DOI: 10.3847/1538-4357/abdf4f
J.A. Cardelli, G.C. Clayton, J.S. Mathis, The relationship between infrared, optical, and ultraviolet extinction. ApJ 345, 245 (1989). 10.1086/167900 DOI: 10.1086/167900
L. Chevallier, B. Czerny, A. Róańska et al., Response of the warm absorber cloud to a variable nuclear flux in active galactic nuclei. A &A 467(3), 971–978 (2007). https://doi.org/10.1051/0004-6361:20065657. arXiv:astro-ph/0701112 [astro-ph]
H. Choi, K.M. Leighly, D.M. Terndrup et al., The physical properties of low-redshift FeLoBAL quasars. I. Spectral-synthesis analysis of the broad absorption-line (BAL) outflows using SimBAL. ApJ 937(2), 74 (2022). https://doi.org/10.3847/1538-4357/ac61d9. arXiv:2203.11964 [astro-ph.GA]
M.H. Christopher, N.Z. Scoville, S.R. Stolovy HCN and HCO + observations of the Galactic circumnuclear disk. ApJ 622(1), 346–365 (2005). https://doi.org/10.1086/427911. arXiv:astro-ph/0502532 [astro-ph]
A. Ciurlo, R.D. Campbell, M.R. Morris et al., A population of dust-enshrouded objects orbiting the Galactic black hole. Nature 577(7790), 337–340 (2020). 10.1038/s41586-019-1883-y. arXiv:2001.08325 [astro-ph.GA] DOI: 10.1038/s41586-019-1883-y
S. Collin, J.P. Zahn, Star formation and evolution in accretion disks around massive black holes. A &A 344, 433–449 (1999)
S. Collin-Souffrin, Line and continuum radiation from the outer region of accretion discs in active galactic nuclei. I-Preliminary considerations. A &A 179(1–2), 60–70 (1987)
A. Cotera, M. Morris, A.M. Ghez, et al. Mid-Infrared Imaging of the Central Parsec with Keck. In: Falcke H, Cotera A, Duschl WJ, et al (eds) The Central Parsecs of the Galaxy, p 240 (1999)
B. Czerny, M. Elvis, Constraints on Quasar Accretion Disks from the Optical/Ultraviolet/Soft X-Ray Big Bump. Astrophys. J. 321, 305 (1987). 10.1086/165630 DOI: 10.1086/165630
B. Czerny, M. Elvis, Constraints on quasar accretion disks from the optical/ultraviolet/soft X-ray big bump. ApJ 321, 305 (1987). 10.1086/165630 DOI: 10.1086/165630
B. Czerny, K. Hryniewicz, The origin of the broad line region in active galactic nuclei. A &A 525, L8 (2011). 10.1051/0004-6361/201016025. arXiv:1010.6201 [astro-ph.CO] DOI: 10.1051/0004-6361/201016025
B. Czerny, J. Li, Z. Loska et al., Extinction due to amorphous carbon grains in red quasars from the Sloan Digital Sky Survey. MNRAS 348(3), L54–L57 (2004). https://doi.org/10.1111/j.1365-2966.2004.07590.x. arXiv:astro-ph/0401158 [astro-ph]
B. Czerny, A. Rózańska, J. Kuraszkiewicz, Constraints for the accretion disk evaporation rate in AGN from the existence of the Broad Line Region. A &A 428, 39–49 (2004b). https://doi.org/10.1051/0004-6361:20040487. arXiv:astro-ph/0403507 [astro-ph]
R.C. Dannen, D. Proga, T. Waters et al., Clumpy AGN outflows due to thermal instability. ApJ 893(2), L34 (2020). 10.3847/2041-8213/ab87a5. arXiv:2001.00133 [astro-ph.GA] DOI: 10.3847/2041-8213/ab87a5
M. de Laurentis, I. De Martino, R. Della Monica, The Galactic Center as a laboratory for theories of gravity and dark matter (2022). arXiv e-prints arXiv:2211.07008
C. Done, S.W. Davis, C. Jin et al., Intrinsic disc emission and the soft X-ray excess in active galactic nuclei. MNRAS 420(3), 1848–1860 (2012). 10.1111/j.1365-2966.2011.19779.x. arXiv:1107.5429 [astro-ph.HE] DOI: 10.1111/j.1365-2966.2011.19779.x
A. Dorodnitsyn, T. Kallman, Parsec-scale obscuring accretion disk with large-scale magnetic field in AGNs. ApJ 842(1), 43 (2017). 10.3847/1538-4357/aa7264. arXiv:1705.03975 [astro-ph.GA] DOI: 10.3847/1538-4357/aa7264
A. Dorodnitsyn, T. Kallman, A physical model for a radiative. Convective dusty disk in AGN. ApJ 910(1), 67 (2021). 10.3847/1538-4357/abe121. arXiv:2007.06572 [astro-ph.GA] DOI: 10.3847/1538-4357/abe121
A. Dorodnitsyn, T. Kallman, D. Proga, An axisymmetric, hydrodynamical model for the torus wind in active Galactic nuclei. ApJ 675(1), L5 (2008). 10.1086/529374. arXiv:0801.1470 [astro-ph] DOI: 10.1086/529374
A. Dorodnitsyn, T. Kallman, G.S. Bisnovatyi-Kogan, AGN obscuration through dusty, infrared-dominated flows. II. Multidimensional. Radiation-hydrodynamics modeling. ApJ 747(1), 8 (2012). 10.1088/0004-637X/747/1/8. arXiv:1111.2103 [astro-ph.HE] DOI: 10.1088/0004-637X/747/1/8
B.T. Draine, E.E. Salpeter, Destruction mechanisms for interstellar dust. ApJ 231, 438–455 (1979). 10.1086/157206 DOI: 10.1086/157206
B.T. Draine, E.E. Salpeter, On the physics of dust grains in hot gas. ApJ 231, 77–94 (1979). 10.1086/157165 DOI: 10.1086/157165
B.T. Draine, E.E. Salpeter, On the physics of dust grains in hot gas. ApJ 231, 77–94 (1979). 10.1086/157165 DOI: 10.1086/157165
A. Eckart, R. Genzel, R. Hofmann et al., High angular resolution spectroscopic and polarimetric imaging of the Galactic center in the near-infrared. ApJ 445, L23 (1995). 10.1086/187880 DOI: 10.1086/187880
A. Eckart, K. Mužić, S. Yazici et al., Near-infrared proper motions and spectroscopy of infrared excess sources at the Galactic center. A &A 551, A18 (2013). 10.1051/0004-6361/201219994. arXiv:1208.1907 [astro-ph.IM] DOI: 10.1051/0004-6361/201219994
A. Eckart, A. Hüttemann, C. Kiefer et al., The Milky Way’s supermassive black hole: How good a case is it? Found. Phys. 47(5), 553–624 (2017). 10.1007/s10701-017-0079-2. arXiv:1703.09118 [astro-ph.HE] DOI: 10.1007/s10701-017-0079-2
M. Elitzur, I. Shlosman, The AGN-obscuring torus: The end of the “Doughnut” paradigm? ApJ 648(2), L101–L104 (2006). https://doi.org/10.1086/508158. arXiv:astro-ph/0605686 [astro-ph]
M. Elvis, A structure for quasars. Astrophys. J. 545(1), 63–76 (2000). https://doi.org/10.1086/317778. arXiv:astro-ph/0008064 [astro-ph]
M. Elvis, M. Marengo, M. Karovska, Smoking quasars: a new source for cosmic dust. ApJ 567(2), L107–L110 (2002). https://doi.org/10.1086/340006. arXiv:astro-ph/0202002 [astro-ph]
A.S. Evans, D.T. Frayer, V. Charmandaris et al., GOALS-JWST: hidden star formation and extended PAH emission in the luminous infrared galaxy VV 114. ApJ 940(1), L8 (2022). 10.3847/2041-8213/ac9971. arXiv:2208.14507 [astro-ph.GA] DOI: 10.3847/2041-8213/ac9971
Event Horizon Telescope. Collaboration, K. Akiyama, A. Alberdi et al., First M87 event horizon telescope results. IV. Imaging the central supermassive black hole. ApJ 875(1), L4 (2019). https://doi.org/10.3847/2041-8213/ab0e85. arXiv:1906.11241 [astro-ph.GA]
K. Akiyama, A. Alberdi, Event Horizon Telescope Collaboration et al., First sagittarius A* event horizon telescope results. I. The shadow of the supermassive black hole in the center of the Milky Way. ApJ 930(2), 12 (2022). https://doi.org/10.3847/2041-8213/ac6674
G.J. Ferland, M. Chatzikos, F. Guzmán et al., The 2017 release cloudy. Rev. Mexicana Astron. Astrofis. 53, 385–438 (2017). arXiv:1705.10877 [astro-ph.GA]
J. Ferreira, G. Pelletier, Magnetized accretion-ejection structures. III. Stellar and extragalactic jets as weakly dissipative disk outflows. A &A 295, 807 (1995)
F. Fiore, C. Feruglio, F. Shankar et al., AGN wind scaling relations and the co-evolution of black holes and galaxies. A &A 601, A143 (2017). 10.1051/0004-6361/201629478. arXiv:1702.04507 [astro-ph.GA] DOI: 10.1051/0004-6361/201629478
J. Fritz, A. Franceschini, E. Hatziminaoglou, Revisiting the infrared spectra of active galactic nuclei with a new torus emission model. MNRAS 366(3), 767–786 (2006). https://doi.org/10.1111/j.1365-2966.2006.09866.x. arXiv:astro-ph/0511428 [astro-ph]
S.C. Gallagher, J.E. Everett, M.M. Abado et al., Investigating the structure of the windy torus in quasars. MNRAS 451(3), 2991–3000 (2015). 10.1093/mnras/stv1126. arXiv:1505.04219 [astro-ph.GA] DOI: 10.1093/mnras/stv1126
I. García-Bernete, O. González-Martín, C. Ramos Almeida et al., Torus and polar dust dependence on active galactic nucleus properties. A &A 667, A140 (2022). https://doi.org/10.1051/0004-6361/202244230. arXiv:2210.03508 [astro-ph.GA]
S. García-Burillo, F. Combes, A. Usero et al., Molecular line emission in NGC 1068 imaged with ALMA. I. An AGN-driven outflow in the dense molecular gas. A &A 567, A125 (2014). https://doi.org/10.1051/0004-6361/201423843. arXiv:1405.7706 [astro-ph.GA]
C.M. Gaskell, R.W. Goosmann, R.R.J. Antonucci et al., The nuclear reddening curve for active galactic nuclei and the shape of the infrared to X-ray spectral energy distribution. ApJ 616(1), 147–156 (2004). https://doi.org/10.1086/423885. arXiv:astro-ph/0309595 [astro-ph]
C.M. Gaskell, F.C., Anderson, SÁ. Birmingham, et al Estimating reddening of the continuum and broad-line region of active galactic nuclei: the mean reddening of NGC 5548 and the size of the accretion disc (2022). arXiv e-prints arXiv:2208.11437
R. Genzel, Nobel lecture: a forty-year journey∗. Rev. Mod. Phys. 94(2), 020501 (2022). 10.1103/RevModPhys.94.020501 DOI: 10.1103/RevModPhys.94.020501
S. Gillessen, R. Genzel, T.K. Fritz et al., A gas cloud on its way towards the supermassive black hole at the Galactic Centre. Nature 481(7379), 51–54 (2012). 10.1038/nature10652. arXiv:1112.3264 [astro-ph.GA] DOI: 10.1038/nature10652
M.R. Goad, K.T. Korista, A.J. Ruff, The broad emission-line region: the confluence of the outer accretion disc with the inner edge of the dusty torus. MNRAS 426(4), 3086–3111 (2012). 10.1111/j.1365-2966.2012.21808.x. arXiv:1207.6339 [astro-ph.CO] DOI: 10.1111/j.1365-2966.2012.21808.x
R.W. Goodrich, Dust in the Broad-Line Regions of Seyfert Galaxies. ApJ 440, 141 (1995). 10.1086/175256 DOI: 10.1086/175256
M.J. Graham, N.P. Ross, D. Stern et al., Understanding extreme quasar optical variability with CRTS - II. Changing-state quasars. MNRAS 491(4), 4925–4948 (2020). 10.1093/mnras/stz3244. arXiv:1905.02262 [astro-ph.GA] DOI: 10.1093/mnras/stz3244
G.R.A.V.I.T.Y. Collaboration, R. Abuter, A. Amorim et al., Detection of orbital motions near the last stable circular orbit of the massive black hole SgrA*. A &A 618, L10 (2018). https://doi.org/10.1051/0004-6361/201834294. arXiv:1810.12641 [astro-ph.GA]
C.J. Grier, B.M. Peterson, K. Horne et al., The structure of the broad-line region in active Galactic nuclei. I. Reconstructed velocity-delay maps. ApJ 764(1), 47 (2013). 10.1088/0004-637X/764/1/47. arXiv:1210.2397 [astro-ph.CO] DOI: 10.1088/0004-637X/764/1/47
M. Gu, The evolution of the dusty torus covering factor in quasars. ApJ 773(2), 176 (2013). 10.1088/0004-637X/773/2/176. arXiv:1307.1193 [astro-ph.CO] DOI: 10.1088/0004-637X/773/2/176
E. Guise, S.F. Hönig, V. Gorjian et al., Dust reverberation mapping and light-curve modelling of Zw229-015. MNRAS 516(4), 4898–4915 (2022). 10.1093/mnras/stac2529. arXiv:2209.01409 [astro-ph.GA] DOI: 10.1093/mnras/stac2529
A. Gupta, S. Mathur, Y. Krongold et al., A two-phase low-velocity outflow in the Seyfert 1 galaxy ark 564. ApJ 768(2), 141 (2013). 10.1088/0004-637X/768/2/141. arXiv:1301.6138 [astro-ph.HE] DOI: 10.1088/0004-637X/768/2/141
E. Hatziminaoglou, A. Hernán-Caballero, A. Feltre et al., A complete census of silicate features in the mid-infrared spectra of active galaxies. ApJ 803(2), 110 (2015). 10.1088/0004-637X/803/2/110. arXiv:1502.05823 [astro-ph.GA] DOI: 10.1088/0004-637X/803/2/110
T. Holczer, E. Behar, S. Kaspi, Absorption measure distribution of the outflow in IRAS 13349+2438: Direct observation of thermal instability? ApJ 663(2), 799–807 (2007). https://doi.org/10.1086/518416. arXiv:astro-ph/0703351 [astro-ph]
S.F. Hönig, Redefining the torus: a unifying view of AGNs in the infrared and submillimeter. ApJ 884(2), 171 (2019). 10.3847/1538-4357/ab4591. arXiv:1909.08639 [astro-ph.GA] DOI: 10.3847/1538-4357/ab4591
S.F. Hönig, T. Beckert, K. Ohnaka et al., Radiative transfer modeling of three-dimensional clumpy AGN tori and its application to NGC 1068. A &A 452(2), 459–471 (2006). https://doi.org/10.1051/0004-6361:20054622. arXiv:astro-ph/0602494 [astro-ph]
S.F. Hönig, M. Kishimoto, K.R.W. Tristram et al., Dust in the polar region as a major contributor to the infrared emission of active Galactic nuclei. ApJ 771(2), 87 (2013). 10.1088/0004-637X/771/2/87. arXiv:1306.4312 [astro-ph.CO] DOI: 10.1088/0004-637X/771/2/87
P.Y. Hsieh, P.M. Koch, W.T. Kim et al., The circumnuclear disk revealed by ALMA. I. Dense clouds and tides in the Galactic center. ApJ 913(2), 94 (2021). https://doi.org/10.3847/1538-4357/abf4cd. arXiv:2104.02078 [astro-ph.GA]
D. Hutsemékers, B. Agís González, F. Marin et al., Polarization of changing-look quasars. A &A 625, A54 (2019). https://doi.org/10.1051/0004-6361/201834633. arXiv:1904.03914 [astro-ph.GA]
S. Ichimaru, Bimodal behavior of accretion disks: theory and application to Cygnus X-1 transitions. Astrophys. J. 214, 840–855 (1977). 10.1086/155314 DOI: 10.1086/155314
D. Ilić, L.Č Popović, G. La Mura et al., The analysis of the broad hydrogen Balmer line ratios: possible implications for the physical properties of the broad line region of AGNs. A &A 543, A142 (2012). 10.1051/0004-6361/201219299. arXiv:1205.3950 [astro-ph.CO] DOI: 10.1051/0004-6361/201219299
K. Inayoshi, E. Visbal, Z. Haiman, The assembly of the first massive black holes. ARA &A 58, 27–97 (2020). 10.1146/annurev-astro-120419-014455. arXiv:1911.05791 [astro-ph.GA] DOI: 10.1146/annurev-astro-120419-014455
O. Ishihara, TOPICAL REVIEW: complex plasma: dusts in plasma. J. Phys. D Appl. Phys. 40(8), R121–R147 (2007). 10.1088/0022-3727/40/8/R01 DOI: 10.1088/0022-3727/40/8/R01
A.S. Jermyn, A.J. Dittmann, M. Cantiello et al., Stellar evolution in the disks of active Galactic nuclei produces rapidly rotating massive stars. ApJ 914(2), 105 (2021). 10.3847/1538-4357/abfb67. arXiv:2102.13114 [astro-ph.HE] DOI: 10.3847/1538-4357/abfb67
D. Kakkad, B. Groves, M. Dopita et al., Spatially resolved electron density in the narrow line region of z < 0.02 radio AGNs. A &A 618, A6 (2018). https://doi.org/10.1051/0004-6361/201832790. arXiv:1806.02839 [astro-ph.GA]
V. Karas, J.M. Huré, O. Semerák, TOPICAL REVIEW: gravitating discs around black holes. Class. Quantum Gravity 21(7), R1–R51 (2004). https://doi.org/10.1088/0264-9381/21/7/R01. arXiv:astro-ph/0401345 [astro-ph]
K. Kaur, N.C. Stone, S. Gilbaum, Magnetically Dominated Disks in Tidal Disruption Events and Quasi-Periodic Eruptions (2022). arXiv e-prints arXiv:2211.00704. [astro-ph.HE]
T. Kawaguchi, M. Mori, Orientation effects on the inner region of dusty torus of active Galactic nuclei. ApJ 724(2), L183–L187 (2010). 10.1088/2041-8205/724/2/L183. arXiv:1010.5799 [astro-ph.CO] DOI: 10.1088/2041-8205/724/2/L183
T. Kawaguchi, M. Mori, Near-infrared reverberation by dusty clumpy tori in active Galactic nuclei. ApJ 737(2), 105 (2011). 10.1088/0004-637X/737/2/105. arXiv:1107.0678 [astro-ph.CO] DOI: 10.1088/0004-637X/737/2/105
M. Kishimoto, S.F. Hönig, T. Beckert et al., The innermost region of AGN tori: implications from the HST/NICMOS type 1 point sources and near-IR reverberation. A &A 476(2), 713–721 (2007). 10.1051/0004-6361:20077911. arXiv:0709.0431 [astro-ph] DOI: 10.1051/0004-6361:20077911
M. Kishimoto, R. Antonucci, O. Blaes et al., The characteristic blue spectra of accretion disks in quasars as uncovered in the infrared. Nature 454(7203), 492–494 (2008). 10.1038/nature07114. arXiv:0807.3703 [astro-ph] DOI: 10.1038/nature07114
M. Kishimoto, M. Anderson, T. ten Brummelaar et al., The dust sublimation region of the type 1 AGN NGC 4151 at a hundred microarcsecond scale as resolved by the CHARA array interferometer. ApJ 940(1), 28 (2022). 10.3847/1538-4357/ac91c4. arXiv:2209.06061 [astro-ph.GA] DOI: 10.3847/1538-4357/ac91c4
W. Kollatschny, M. Zetzl, Broad-line active galactic nuclei rotate faster than narrow-line ones. Nature 470(7334), 366–368 (2011). 10.1038/nature09761 DOI: 10.1038/nature09761
W. Kollatschny, M. Zetzl, The shape of broad-line profiles in active galactic nuclei. A &A 549, A100 (2013). 10.1051/0004-6361/201219411. arXiv:1211.3065 [astro-ph.CO] DOI: 10.1051/0004-6361/201219411
A. Konigl, J.F. Kartje, Disk-driven hydromagnetic winds as a key ingredient of active Galactic nuclei unification schemes. ApJ 434, 446 (1994). 10.1086/174746 DOI: 10.1086/174746
S. Koshida, T. Minezaki, Y. Yoshii et al., Reverberation measurements of the inner radius of the dust torus in 17 seyfert galaxies. ApJ 788(2), 159 (2014). 10.1088/0004-637X/788/2/159. arXiv:1406.2078 [astro-ph.GA] DOI: 10.1088/0004-637X/788/2/159
J. Kovář, P. Slaný, Z. Stuchlík et al., Role of electric charge in shaping equilibrium configurations of fluid tori encircling black holes. Phys. Rev. 84(8), 084002 (2011). 10.1103/PhysRevD.84.084002. arXiv:1110.4843 [astro-ph.HE] DOI: 10.1103/PhysRevD.84.084002
J.H. Krolik, Active Galactic Nuclei. From the Central Black Hole to the Galactic Environment (Princeton University Press, Princeton, 1999)
J.H. Krolik, G.A. Kriss, Warm absorbers in active Galactic nuclei: a multitemperature wind. ApJ 561(2), 684–690 (2001). 10.1086/323442 DOI: 10.1086/323442
J.H. Krolik, C.F. McKee, C.B. Tarter, Two-phase models of quasar emission line regions. ApJ 249, 422–442 (1981). 10.1086/159303 DOI: 10.1086/159303
D. Kunneriath, A. Eckart, S.N. Vogel et al., The Galactic centre mini-spiral in the mm-regime. A &A 538, A127 (2012). 10.1051/0004-6361/201117676. arXiv:1201.2362 [astro-ph.GA] DOI: 10.1051/0004-6361/201117676
S.M. LaMassa, S. Cales, E.C. Moran et al., The discovery of the first “Changing Look’’ quasar: new insights into the physics and phenomenology of active Galactic nucleus. ApJ 800(2), 144 (2015). 10.1088/0004-637X/800/2/144. arXiv:1412.2136 [astro-ph.GA] DOI: 10.1088/0004-637X/800/2/144
A. Laor, On the nature of low-luminosity narrow-line active Galactic nuclei. ApJ 590(1), 86–94 (2003). https://doi.org/10.1086/375008. arXiv:astro-ph/0302541 [astro-ph]
A. Laor, B.T. Draine, Spectroscopic constraints on the properties of dust in active Galactic nuclei. ApJ 402, 441 (1993). 10.1086/172149 DOI: 10.1086/172149
A. Lawrence, M. Elvis, Misaligned disks as obscurers in active galaxies. ApJ 714(1), 561–570 (2010). 10.1088/0004-637X/714/1/561 DOI: 10.1088/0004-637X/714/1/561
C. Leipski, H. Falcke, N. Bennert et al., The radio structure of radio-quiet quasars. A &A 455(1), 161–172 (2006). https://doi.org/10.1051/0004-6361:20054311. arXiv:astro-ph/0606540 [astro-ph]
A. Li, Dust in Active Galactic Nuclei. In: Ho LC, Wang JW (eds) The Central Engine of Active Galactic Nuclei, p 561 (2007)
N. López-Gonzaga, L. Burtscher, K.R.W. Tristram et al., Mid-infrared interferometry of 23 AGN tori: on the significance of polar-elongated emission. A &A 591, A47 (2016). 10.1051/0004-6361/201527590. arXiv:1602.05592 [astro-ph.GA] DOI: 10.1051/0004-6361/201527590
Z. Loska, B. Czerny, R. Szczerba, Irradiation of accretion discs in active galactic nuclei due to the presence of a warm absorber. Mon. Not. R. Astron. Soc. 355(4), 1080–1090 (2004). https://doi.org/10.1111/j.1365-2966.2004.08387.x. arXiv:astro-ph/0409221 [astro-ph]
A.G. Markowitz, M. Krumpe, R. Nikutta, First X-ray-based statistical tests for clumpy-torus models: eclipse events from 230 years of monitoring of Seyfert AGN. MNRAS 439(2), 1403–1458 (2014). 10.1093/mnras/stt2492. arXiv:1402.2779 [astro-ph.GA] DOI: 10.1093/mnras/stt2492
M.L. Martínez-Aldama, M. Zajaček, B. Czerny et al., Scatter analysis along the multidimensional radius-luminosity relations for reverberation-mapped Mg II sources. ApJ 903(2), 86 (2020). 10.3847/1538-4357/abb6f8. arXiv:2007.09955 [astro-ph.GA] DOI: 10.3847/1538-4357/abb6f8
G. Matt, M. Guainazzi, R. Maiolino, Changing look: from Compton-thick to Compton-thin, or the rebirth of fossil active galactic nuclei. MNRAS 342(2), 422–426 (2003). https://doi.org/10.1046/j.1365-8711.2003.06539.x. arXiv:astro-ph/0302328 [astro-ph]
D.L. Meier, Black Hole Astrophysics: The Engine Paradigm (Springer. Berlin (2012). 10.1007/978-3-642-01936-4 DOI: 10.1007/978-3-642-01936-4
F. Melia, H. Falcke, The supermassive black hole at the Galactic center. ARA &A 39, 309–352 (2001). https://doi.org/10.1146/annurev.astro.39.1.309. arXiv:astro-ph/0106162 [astro-ph]
P.G. Mezger, R. Zylka, C.J. Salter et al., Continuum observations of SGR A at mm/submm wavelengths. A &A 209, 337–348 (1989)
P.G. Mezger, W.J. Duschl, R. Zylka, The galactic center: A laboratory for AGN? A &Ar 7(4), 289–388 (1996). 10.1007/s001590050007 DOI: 10.1007/s001590050007
J.S. Miller, R.W. Goodrich, W.G. Mathews, Multidirectional views of the active nucleus of NGC 1068. ApJ 378, 47 (1991). 10.1086/170406 DOI: 10.1086/170406
T. Minezaki, Y. Yoshii, Y. Kobayashi et al., Reverberation measurements of the inner radii of the dust tori in Quasars. ApJ 886(2), 150 (2019). 10.3847/1538-4357/ab4f7b. arXiv:1910.08722 [astro-ph.GA] DOI: 10.3847/1538-4357/ab4f7b
E. Moravec, J. Svoboda, A. Borkar et al., Do radio active galactic nuclei reflect X-ray binary spectral states? A &A 662, A28 (2022). 10.1051/0004-6361/202142870. arXiv:2202.11116 [astro-ph.GA] DOI: 10.1051/0004-6361/202142870
L. Moser, Á. Sánchez-Monge, A. Eckart et al., Approaching hell’s kitchen: molecular daredevil clouds in the vicinity of sagittarius A*. A &A 603, A68 (2017). 10.1051/0004-6361/201628385. arXiv:1603.00801 [astro-ph.GA] DOI: 10.1051/0004-6361/201628385
A.L. Müller, M.H. Naddaf, M. Zajaček et al., Nonthermal emission from fall-back clouds in the broad-line region of active Galactic nuclei. ApJ 931(1), 39 (2022). 10.3847/1538-4357/ac660a. arXiv:2204.05361 [astro-ph.HE] DOI: 10.3847/1538-4357/ac660a
F. Müller-Sánchez, M.A. Prieto, E.K.S. Hicks et al., Outflows from Active Galactic nuclei: kinematics of the narrow-line and coronal-line regions in seyfert galaxies. ApJ 739(2), 69 (2011). 10.1088/0004-637X/739/2/69. arXiv:1107.3140 [astro-ph.CO] DOI: 10.1088/0004-637X/739/2/69
N. Murray, J. Chiang, S.A. Grossman et al., Accretion disk winds from active Galactic nuclei. Astrophys J 451, 498 (1995). 10.1086/176238 DOI: 10.1086/176238
M.H. Naddaf, B. Czerny, Radiation pressure on dust explaining the low ionized broad emission lines in active galactic nuclei. Dust as an important driver of line shape. Astron. Astrophys. 663, A77 (2022). https://doi.org/10.1051/0004-6361/202142806. arXiv:2111.14963 [astro-ph.GA]
M.H. Naddaf, B. Czerny, R. Szczerba, BLR size in realistic FRADO model: the role of shielding effect. Front. Astron. Space Sci. 7, 15 (2020). 10.3389/fspas.2020.00015. arXiv:2004.01988 [astro-ph.GA] DOI: 10.3389/fspas.2020.00015
M.H. Naddaf, B. Czerny, R. Szczerba, The picture of BLR in 2.5D FRADO: dynamics and geometry. Astrophys. J. 920(1), 30 (2021). https://doi.org/10.3847/1538-4357/ac139d. arXiv:2102.00336 [astro-ph.GA]
K. Nandra, K.A. Pounds, GINGA observations of the X-ray spectra of Seyfert galaxies. MNRAS 268, 405–429 (1994). 10.1093/mnras/268.2.405 DOI: 10.1093/mnras/268.2.405
R. Narayan, I. Yi, Advection-dominated accretion: a self-similar solution. ApJ 428, L13 (1994). 10.1086/187381. arXiv:astro-ph/9403052 [astro-ph] DOI: 10.1086/187381
R. Narayan, R. Mahadevan, J.E. Grindlay et al., Advection-dominated accretion model of Sagittarius A ∗: evidence for a black hole at the Galactic center. ApJ 492(2), 554–568 (1998). https://doi.org/10.1086/305070. arXiv:astro-ph/9706112 [astro-ph]
R. Narayan, I.V. Igumenshchev, M.A. Abramowicz, Magnetically arrested disk: an energetically efficient accretion flow. PASJ 55, L69–L72 (2003). https://doi.org/10.1093/pasj/55.6.L69. arXiv:astro-ph/0305029 [astro-ph]
R. Narayan, A. Chael, K. Chatterjee et al., Jets in magnetically arrested hot accretion flows: geometry, power, and black hole spin-down. MNRAS 511(3), 3795–3813 (2022). 10.1093/mnras/stac285. arXiv:2108.12380 [astro-ph.HE] DOI: 10.1093/mnras/stac285
C.A. Negrete, D. Dultzin, P. Marziani et al., Highly accreting quasars: the SDSS low-redshift catalog. A &A 620, A118 (2018). 10.1051/0004-6361/201833285. arXiv:1809.08310 [astro-ph.GA] DOI: 10.1051/0004-6361/201833285
M. Nenkova, M.M. Sirocky, Ž Ivezić et al., AGN dusty tori. I. Handling of clumpy media. ApJ 685(1), 147–159 (2008). 10.1086/590482. arXiv:0806.0511 [astro-ph] DOI: 10.1086/590482
M. Nenkova, M.M. Sirocky, R. Nikutta et al., AGN dusty tori. II. Observational implications of clumpiness. ApJ 685(1), 160–180 (2008). 10.1086/590483. arXiv:0806.0512 [astro-ph] DOI: 10.1086/590483
H. Netzer, Revisiting the unified model of active Galactic nuclei. Ann. Rev. Astron. Astrophys. 53, 365–408 (2015). 10.1146/annurev-astro-082214-122302. arXiv:1505.00811 [astro-ph.GA] DOI: 10.1146/annurev-astro-082214-122302
H. Netzer, A. Laor, Dust in the narrow-line region of active Galactic nuclei. ApJ 404, L51 (1993). 10.1086/186741 DOI: 10.1086/186741
H. Netzer, C. Lani, R. Nordon et al., Star formation black hole growth and dusty tori in the most luminous AGNs at z=2-3.5. ApJ 819(2), 123 (2016). https://doi.org/10.3847/0004-637X/819/2/123. arXiv:1511.07876 [astro-ph.GA]
G. Neugebauer, J.B. Oke, E.E. Becklin et al., Absolute spectral energy distribution of quasi-stellar objects from 0.3 to 10 microns. ApJ 230, 79–94 (1979). 10.1086/157063
F. Nicastro, A. Martocchia, G. Matt, The lack of broad-line regions in low accretion rate active galactic nuclei as evidence of their origin in the accretion disk. ApJ 589(1), L13–L16 (2003). https://doi.org/10.1086/375715. arXiv:astro-ph/0304128 [astro-ph]
S. Nishiyama, T. Nagata, M. Tamura et al., The interstellar extinction law toward the Galactic center. II. V, J, H, and K s bands. ApJ 680(2), 1174–1179 (2008). https://doi.org/10.1086/587791. arXiv:0802.3559 [astro-ph]
F. Nogueras-Lara, R. Schödel, N. Neumayer et al., GALACTICNUCLEUS: a high angular-resolution JHK s imaging survey of the Galactic centre. III. Evidence for wavelength-dependence of the extinction curve in the near-infrared. A &A 641, A141 (2020). https://doi.org/10.1051/0004-6361/202038606. arXiv:2007.04401 [astro-ph.GA]
I.D. Novikov, K.S. Thorne, Astrophysics of black holes. In: Black Holes (Les Astres Occlus), pp 343–450 (1973)
V.L. Oknyanskij, On the possibility for measuring the hubble constant from optical-to-NIR variability time delay in AGNs. Odessa Astron. Publ. 12, 99 (1999). arXiv:2208.09295 [astro-ph.GA]
V.L. Oknyanskij, V.M. Lyuty, O.G. Taranova et al., On the correlation of IR and optical variability in NGC 4151. Odessa Astron. Publ. 21, 79 (2008)
D.E. Osterbrock, Ionized gas and dust in active galactic nuclei. AJ 84, 901–909 (1979). 10.1086/112494
D.E. Osterbrock, G.J. Ferland, Astrophysics of gaseous nebulae and active galactic nuclei (University Science Books, Sausalito, CA, 2006)
D.E. Osterbrock, R.W. Pogge, The spectra of narrow-line Seyfert 1 galaxies. ApJ 297, 166–176 (1985). 10.1086/163513 DOI: 10.1086/163513
T. Ott, A. Eckart, R. Genzel, Variable and embedded stars in the Galactic center. ApJ 523(1), 248–264 (1999). 10.1086/307712 DOI: 10.1086/307712
P. Padovani, D.M. Alexander, R.J. Assef et al., Active galactic nuclei: What’s in a name? A &Ar 25(1), 2 (2017). 10.1007/s00159-017-0102-9. arXiv:1707.07134 [astro-ph.GA] DOI: 10.1007/s00159-017-0102-9
X. Pan, S.L. Li, X. Cao et al., A disk instability model for the quasi-periodic eruptions of GSN 069. ApJ 928(2), L18 (2022). 10.3847/2041-8213/ac5faf. arXiv:2203.12137 [astro-ph.GA] DOI: 10.3847/2041-8213/ac5faf
S. Panda, The CaFe project: optical Fe II and near-infrared Ca II triplet emission in active galaxies: simulated EWs and the co-dependence of cloud size and metal content. A &A 650, A154 (2021). 10.1051/0004-6361/202140393. arXiv:2004.13113 [astro-ph.GA] DOI: 10.1051/0004-6361/202140393
S. Panda, P. Marziani, High Eddington accreting quasar spectra as discovery tools: current state and challenges (2022). arXiv e-prints arXiv:2210.15041
S. Panda, E.J. Skorek, Metallicity evolution in quasars (2021). arXiv e-prints arXiv:2111.14516 [astro-ph.GA]
S. Panda, M. Śniegowska, Changing-Look AGNs – I. Tracking the transition on the main sequence of quasars (2022). arXiv e-prints arXiv:2206.10056 [astro-ph.HE]
S. Panda, B. Czerny, T.P. Adhikari et al., Modeling of the quasar main sequence in the optical plane. ApJ 866(2), 115 (2018). 10.3847/1538-4357/aae209. arXiv:1806.08571 [astro-ph.HE] DOI: 10.3847/1538-4357/aae209
S. Panda, P. Marziani, B. Czerny, The quasar main sequence explained by the combination of eddington ratio, metallicity, and orientation. ApJ 882(2), 79 (2019). 10.3847/1538-4357/ab3292. arXiv:1905.01729 [astro-ph.HE] DOI: 10.3847/1538-4357/ab3292
F. Peißker, S.E. Hosseini, M. Zajaček et al., Monitoring dusty sources in the vicinity of Sagittarius A*. A &A 634, A35 (2020). 10.1051/0004-6361/201935953. arXiv:1911.00321 [astro-ph.GA] DOI: 10.1051/0004-6361/201935953
F. Peißker, M. Zajaček, A. Eckart et al., The apparent tail of the Galactic center object G2/DSO. ApJ 923(1), 69 (2021). 10.3847/1538-4357/ac23df. arXiv:2112.04543 [astro-ph.GA] DOI: 10.3847/1538-4357/ac23df
B.M. Peterson, A. Wandel, Keplerian motion of broad-line region gas as evidence for supermassive black holes in active Galactic nuclei. Astrophys. J. Lett. 521(2), L95–L98 (1999). https://doi.org/10.1086/312190. arXiv:astro-ph/9905382 [astro-ph]
B.M. Peterson, L. Ferrarese, K.M. Gilbert et al., Central masses and broad-line region sizes of active Galactic nuclei. II. A homogeneous analysis of a large reverberation-mapping database. ApJ 613(2), 682–699 (2004). https://doi.org/10.1086/423269. arXiv:astro-ph/0407299 [astro-ph]
P.O. Petrucci, J. Ferreira, G. Henri et al., The role of the disc magnetization on the hysteresis behaviour of X-ray binaries. MNRAS 385(1), L88–L92 (2008). 10.1111/j.1745-3933.2008.00439.x. arXiv:0712.3388 [astro-ph] DOI: 10.1111/j.1745-3933.2008.00439.x
E.A. Pier, J.H. Krolik, Infrared spectra of obscuring dust tori around active Galactic nuclei. I. Calculational method and basic trends. ApJ 401, 99 (1992). 10.1086/172042
J.M. Pittard, J.E. Dyson, S.A.E.G. Falle et al., The formation of broad emission line regions in supernova-QSO wind interactions. A &A 375, 827–839 (2001). https://doi.org/10.1051/0004-6361:20010906. arXiv:astro-ph/0107101 [astro-ph]
P. Predehl, R.A. Sunyaev, W. Becker et al., Detection of large-scale X-ray bubbles in the Milky Way halo. Nature 588(7837), 227–231 (2020). 10.1038/s41586-020-2979-0. arXiv:2012.05840 [astro-ph.GA] DOI: 10.1038/s41586-020-2979-0
R. Prince, K. Hryniewicz, S. Panda et al., Viewing angle observations and effects of evolution with Redshift, Black Hole Mass, and Eddington Ratio in quasar-based cosmology. ApJ 925(2), 215 (2022). 10.3847/1538-4357/ac3f36. arXiv:2106.03877 [astro-ph.GA] DOI: 10.3847/1538-4357/ac3f36
D. Proga, J.M. Stone, T.R. Kallman, Dynamics of line-driven disk winds in active Galactic nuclei. Astrophys. J. 543(2), 686–696 (2000). https://doi.org/10.1086/317154. arXiv:astro-ph/0005315 [astro-ph]
S. Rakshit, C.S. Stalin, J. Kotilainen, Spectral properties of quasars from sloan digital sky survey data release 14: the catalog. ApJs 249(1), 17 (2020). 10.3847/1538-4365/ab99c5. arXiv:1910.10395 [astro-ph.GA] DOI: 10.3847/1538-4365/ab99c5
C. Ramos Almeida, C. Ricci, Nuclear obscuration in active galactic nuclei. Nat. Astron. 1, 679–689 (2017). https://doi.org/10.1038/s41550-017-0232-z. arXiv:1709.00019 [astro-ph.GA]
C. Ramos Almeida, M.J. Martínez González, A. Asensio Ramos et al., Upholding the unified model for active galactic nuclei: VLT/FORS2 spectropolarimetry of Seyfert 2 galaxies. MNRAS 461(2), 1387–1403 (2016). https://doi.org/10.1093/mnras/stw1388. arXiv:1606.02204 [astro-ph.GA]
C. Rauch, K. Mužić, A. Eckart et al., A peek behind the dusty curtain: KS -band polarization photometry and bow shock models of the Galactic center source IRS 8. A &A 551, A35 (2013). 10.1051/0004-6361/201219874 DOI: 10.1051/0004-6361/201219874
P.F. Roche, C. Packham, D.K. Aitken et al., Silicate absorption in heavily obscured galaxy nuclei. MNRAS 375(1), 99–104 (2007). https://doi.org/10.1111/j.1365-2966.2006.11207.x. arXiv:astro-ph/0610583 [astro-ph]
P.F. Roche, E. Lopez-Rodriguez, C.M. Telesco et al., The magnetic field in the central parsec of the Galaxy. MNRAS 476(1), 235–245 (2018). 10.1093/mnras/sty129. arXiv:1802.06634 [astro-ph.GA] DOI: 10.1093/mnras/sty129
A. Różańska, Thermal conduction between an accretion disc and a corona in active galactic nuclei: vertical structure of the transition layer. MNRAS 308(3), 751–762 (1999). 10.1046/j.1365-8711.1999.02752.x DOI: 10.1046/j.1365-8711.1999.02752.x
A. Różańska, B. Czerny, D. Kunneriath et al., Conditions for thermal instability in the Galactic Centre mini-spiral region. MNRAS 445(4), 4385–4394 (2014). 10.1093/mnras/stu2066. arXiv:1410.0397 [astro-ph.HE] DOI: 10.1093/mnras/stu2066
A. Różańska, D. Kunneriath, B. Czerny et al., Multiphase environment of compact galactic nuclei: the role of the nuclear star cluster. MNRAS 464(2), 2090–2102 (2017). 10.1093/mnras/stw2460. arXiv:1609.08834 [astro-ph.GA] DOI: 10.1093/mnras/stw2460
J. Sanchez-Bermudez, R. Schödel, A. Alberdi et al., Properties of bow-shock sources at the Galactic center. A &A 567, A21 (2014). 10.1051/0004-6361/201423657. arXiv:1405.4528 [astro-ph.SR] DOI: 10.1051/0004-6361/201423657
E.O. Schmidt, G.A. Oio, D. Ferreiro et al., Asymmetric emission of the [OIII] λ 5007 profile in narrow-line Seyfert 1 galaxies. A &A 615, A13 (2018). 10.1051/0004-6361/201731557. arXiv:1802.00072 [astro-ph.GA] DOI: 10.1051/0004-6361/201731557
R. Schödel, F. Najarro, K. Muzic Peering through the veil: near-infrared photometry and extinction for the Galactic nuclear star cluster. Accurate near infrared H, Ks, and L’ photometry and the near-infrared extinction-law toward the central parsec of the Galaxy. A &A 511, A18 (2010). https://doi.org/10.1051/0004-6361/200913183
R.O. Sexton, W. Matzko, N. Darden et al., Bayesian AGN Decomposition Analysis for SDSS spectra: a correlation analysis of [O III] λ 5007 outflow kinematics with AGN and host galaxy properties. MNRAS 500(3), 2871–2895 (2021). 10.1093/mnras/staa3278. arXiv:2010.09748 [astro-ph.GA] DOI: 10.1093/mnras/staa3278
E.S. Shablovinskaya, V.L. Afanasiev, Popović Lč, Measuring the AGN sublimation radius with a new approach: reverberation mapping of broad line polarization. ApJ 892(2), 118 (2020). 10.3847/1538-4357/ab7849. arXiv:2003.12809 [astro-ph.GA] DOI: 10.3847/1538-4357/ab7849
E.S. Shablovinskaya, V.L. Afanasiev, Popović Lč, Measuring the AGN sublimation radius with a new approach: reverberation mapping of broad line polarization. ApJ 892(2), 118 (2020). 10.3847/1538-4357/ab7849. arXiv:2003.12809 [astro-ph.GA] DOI: 10.3847/1538-4357/ab7849
N.I. Shakura, R.A. Sunyaev, Black holes in binary systems. Observational appearance. Astron. Astrophys. 24, 337–355 (1973)
Y. Shen, G.T. Richards, M.A. Strauss et al., A catalog of quasar properties from sloan digital sky survey data release 7. ApJs 194(2), 45 (2011). 10.1088/0067-0049/194/2/45. arXiv:1006.5178 [astro-ph.CO] DOI: 10.1088/0067-0049/194/2/45
I. Shlosman, M.C. Begelman, Evolution of self-gravitating accretion disks in active Galactic nuclei. ApJ 341, 685 (1989). 10.1086/167526 DOI: 10.1086/167526
R. Siebenmorgen, M. Haas, E. Krügel et al., Discovery of 10 μ m silicate emission in quasars. Evidence of the AGN unification scheme. A &A 436(1), L5–L8 (2005). https://doi.org/10.1051/0004-6361:200500109
R. Siebenmorgen, F. Heymann, A. Efstathiou, Self-consistent two-phase AGN torus models ⋆. SED library for observers. A &A 583, A120 (2015). 10.1051/0004-6361/201526034. arXiv:1508.04343 [astro-ph.GA] DOI: 10.1051/0004-6361/201526034
M. Sniegowska, B. Czerny, E. Bon et al., Possible mechanism for multiple changing-look phenomena in active galactic nuclei. Astron. Astrophys. 641, A167 (2020). 10.1051/0004-6361/202038575. arXiv:2007.06441 [astro-ph.GA] DOI: 10.1051/0004-6361/202038575
M. Śniegowska, P. Marziani, B. Czerny et al., High metal content of highly accreting quasars. ApJ 910(2), 115 (2021). 10.3847/1538-4357/abe1c8. arXiv:2009.14177 [astro-ph.HE] DOI: 10.3847/1538-4357/abe1c8
M. Śniegowska, M. Grzȩdzielski, B. Czerny, et al Modified models of radiation pressure instability in application to 10, 10 5, and 10 7 M ⊙ accreting black holes (2022). arXiv e-prints arXiv:2204.10067 [astro-ph.HE]
M.A. Sobolewska, A. Siemiginowska, M. Gierliński, Simulated spectral states of active galactic nuclei and observational predictions. MNRAS 413(3), 2259–2268 (2011). 10.1111/j.1365-2966.2011.18302.x. arXiv:1102.0798 [astro-ph.GA] DOI: 10.1111/j.1365-2966.2011.18302.x
C. Sobrino Figaredo, M. Haas, M. Ramolla, et al Dust Reverberation of 3C 273: Torus Structure and Lag-Luminosity Relation. AJ 159(6), 259 (2020). https://doi.org/10.3847/1538-3881/ab89b1, arXiv:2004.10244 [astro-ph.GA]
S. Solanki, S.M. Ressler, L. Murchikova, et al The Inner 2 pc of Sagittarius A*: Simulations of the Circumnuclear Disk and Multiphase Gas Accretion in the Galactic Center (2023). arXiv e-prints. https://doi.org/10.48550/arXiv.2301.07735, arXiv:2301.07735 [astro-ph.HE]
M. Stalevski, J. Fritz, M. Baes et al., 3D radiative transfer modelling of the dusty tori around active galactic nuclei as a clumpy two-phase medium. MNRAS 420(4), 2756–2772 (2012). 10.1111/j.1365-2966.2011.19775.x. arXiv:1109.1286 [astro-ph.CO] DOI: 10.1111/j.1365-2966.2011.19775.x
M. Stalevski, C. Ricci, Y. Ueda et al., The dust covering factor in active galactic nuclei. MNRAS 458(3), 2288–2302 (2016). 10.1093/mnras/stw444. arXiv:1602.06954 [astro-ph.GA] DOI: 10.1093/mnras/stw444
M. Stalevski, D. Asmus, K.R.W. Tristram, Dissecting the active galactic nucleus in Circinus - I. Peculiar mid-IR morphology explained by a dusty hollow cone. MNRAS 472(4), 3854–3870 (2017). https://doi.org/10.1093/mnras/stx2227. arXiv:1708.07838 [astro-ph.GA]
M. Stalevski, K.R.W. Tristram, D. Asmus, Dissecting the active galactic nucleus in Circinus - II. A thin dusty disc and a polar outflow on parsec scales. MNRAS 484(3), 3334–3355 (2019). https://doi.org/10.1093/mnras/stz220. arXiv:1901.05488 [astro-ph.GA]
J. Stern, A. Laor, A. Baskin, Radiation pressure confinement - I. Ionized gas in the ISM of AGN hosts. MNRAS 438(2), 901–921 (2014). https://doi.org/10.1093/mnras/stt1843. arXiv:1309.7825 [astro-ph.CO]
T. Storchi-Bergmann, Observational Overview of the Feeding of Active Galactic Nuclei. In: Revista Mexicana de Astronomia y Astrofisica Conference Series, pp 139–146 (2008), https://doi.org/10.48550/arXiv.0712.3747, arXiv:0712.3747
M. Su, T.R. Slatyer, D.P. Finkbeiner, Giant Gamma-ray bubbles from Fermi-LAT: Active Galactic nucleus activity or bipolar galactic wind? ApJ 724(2), 1044–1082 (2010). 10.1088/0004-637X/724/2/1044. arXiv:1005.5480 [astro-ph.HE] DOI: 10.1088/0004-637X/724/2/1044
J.W. Sulentic, P. Marziani, D. Dultzin-Hacyan, Phenomenology of broad emission lines in active Galactic nuclei. ARA &A 38, 521–571 (2000). 10.1146/annurev.astro.38.1.521 DOI: 10.1146/annurev.astro.38.1.521
R. Sunyaev, E. Churazov, Equivalent width, shape and proper motion of the iron fluorescent line emission from molecular clouds as an indicator of the illuminating source X-ray flux history. MNRAS 297(4), 1279–1291 (1998). https://doi.org/10.1046/j.1365-8711.1998.01684.x. arXiv:astro-ph/9805038 [astro-ph]
R.A. Sunyaev, M. Markevitch, M. Pavlinsky, The center of the galaxy in the recent past: a view from GRANAT. ApJ 407, 606 (1993). 10.1086/172542 DOI: 10.1086/172542
A. Tanner, A.M. Ghez, M. Morris et al., Spatially resolved observations of the Galactic center source IRS 21. ApJ 575(2), 860–870 (2002). https://doi.org/10.1086/341470. arXiv:astro-ph/0204372 [astro-ph]
A.M. Tanner, A.M. Ghez, M. Morris et al., Resolving the Northern arm sources at the Galactic center. Astronomische Nachrichten Suppl. 324(1), 597–603 (2003). 10.1002/asna.200385093 DOI: 10.1002/asna.200385093
R. Tazaki, K. Ichikawa, M. Kokubo, Dust destruction by charging: a possible origin of gray extinction curves of active Galactic nuclei. ApJ 892(2), 84 (2020). 10.3847/1538-4357/ab7822. arXiv:2002.08023 [astro-ph.GA] DOI: 10.3847/1538-4357/ab7822
F. Tombesi, M. Cappi, J.N. Reeves et al., Evidence for ultra-fast outflows in radio-quiet AGNs. I. Detection and statistical incidence of Fe K-shell absorption lines. A &A 521, A57 (2010). https://doi.org/10.1051/0004-6361/200913440. arXiv:1006.2858 [astro-ph.HE]
A.A. Trani, M. Mapelli, A. Ballone, Forming circumnuclear disks and rings in galactic nuclei: a competition between supermassive Black Hole and nuclear star cluster. ApJ 864(1), 17 (2018). 10.3847/1538-4357/aad414. arXiv:1807.09780 [astro-ph.GA] DOI: 10.3847/1538-4357/aad414
A. Trinca, R. Schneider, R. Maiolino et al., Seeking the growth of the first black hole seeds with JWST. MNRAS 519(3), 4753–4764 (2023). 10.1093/mnras/stac3768. arXiv:2211.01389 [astro-ph.GA] DOI: 10.1093/mnras/stac3768
A. Trova, V. Karas, P. Slaný et al., Electrically charged matter in permanent rotation around magnetized black holes: a toy model for self-gravitating fluid tori. ApJs 226(1), 12 (2016). 10.3847/0067-0049/226/1/12. arXiv:1608.03427 [astro-ph.HE] DOI: 10.3847/0067-0049/226/1/12
A. Trova, E. Hackmann, V. Karas et al., Influence of test charge and uniform magnetic field on charged fluid equilibrium structures. Phys. Rev. 101(8), 083027 (2020). 10.1103/PhysRevD.101.083027 DOI: 10.1103/PhysRevD.101.083027
M. Tsuboi, Y. Kitamura, K. Uehara et al., ALMA view of the Galactic center minispiral: ionized gas flows around sagittarius A∗. ApJ 842(2), 94 (2017). 10.3847/1538-4357/aa74e3. arXiv:1608.08714 [astro-ph.GA] DOI: 10.3847/1538-4357/aa74e3
T. Tsuchikawa, H. Kaneda, S. Oyabu et al., A systematic study of silicate absorption features in heavily obscured AGNs observed by Spitzer/IRS. A &A 651, A117 (2021). 10.1051/0004-6361/202140483. arXiv:2105.04792 [astro-ph.GA] DOI: 10.1051/0004-6361/202140483
U V, Lai T, Bianchin M, et al., GOALS-JWST: Resolving the Circumnuclear Gas Dynamics in NGC 7469 in the Mid-infrared. ApJ 940(1), L5 (2022). https://doi.org/10.3847/2041-8213/ac961c. arXiv:2209.01210 [astro-ph.GA]
C.M. Urry, P. Padovani, Unified schemes for radio-loud active Galactic nuclei. PASP 107, 803 (1995). https://doi.org/10.1086/133630. arXiv:astro-ph/9506063 [astro-ph]
M.P. Véron-Cetty, P. Véron, A catalogue of quasars and active nuclei: 13th edition. A &A 518, A10 (2010). https://doi.org/10.1051/0004-6361/201014188
S.V. Vladimirov, K. Ostrikov, A.A. Samarian, Physics and applications of complex plasmas (2005)
B. Vollmer, W.J. Duschl, The minispiral in the Galactic center revisited. New 4(8), 581–590 (2000). https://doi.org/10.1016/S1384-1076(99)00043-3. arXiv:astro-ph/9904096 [astro-ph]
K. Wada, M. Schartmann, R. Meijerink, Multi-phase nature of a radiation-driven fountain with nuclear starburst in a low-mass active Galactic nucleus. ApJ 828(2), L19 (2016). 10.3847/2041-8205/828/2/L19. arXiv:1608.06995 [astro-ph.GA] DOI: 10.3847/2041-8205/828/2/L19
E.J. Wampler, N.N. Chugai, P. Petitjean, The absorption spectrum of nuclear gas in Q0059–2735. ApJ 443, 586 (1995). 10.1086/175551 DOI: 10.1086/175551
A. Wandel, B.M. Peterson, M.A. Malkan, Central masses and broad-line region sizes of active Galactic nuclei. I. Comparing the photoionization and reverberation techniques. Astrophys. J. 526(2), 579–591 (1999). https://doi.org/10.1086/308017. arXiv:astro-ph/9905224 [astro-ph]
H. Wang, F. Xing, K. Zhang et al., Outflow and hot dust emission in high-redshift quasars. ApJ 776(1), L15 (2013). 10.1088/2041-8205/776/1/L15. arXiv:1309.4465 [astro-ph.CO] DOI: 10.1088/2041-8205/776/1/L15
Q.D. Wang, M.A. Nowak, S.B. Markoff et al., Dissecting X-ray-emitting gas around the center of our galaxy. Science 341(6149), 981–983 (2013). 10.1126/science.1240755. arXiv:1307.5845 [astro-ph.HE] DOI: 10.1126/science.1240755
T. Waters, D. Proga, R. Dannen, Multiphase AGN winds from X-Ray-irradiated disk atmospheres. ApJ 914(1), 62 (2021). 10.3847/1538-4357/abfbe6. arXiv:2101.09273 [astro-ph.GA] DOI: 10.3847/1538-4357/abfbe6
T. Waters, D. Proga, R. Dannen et al., Dynamical thermal instability in highly supersonic outflows. ApJ 931(2), 134 (2022). 10.3847/1538-4357/ac6612. arXiv:2111.07440 [astro-ph.GA] DOI: 10.3847/1538-4357/ac6612
J.C. Weingartner, B.T. Draine, Dust grain-size distributions and extinction in the Milky Way, Large Magellanic Cloud, and Small Magellanic Cloud. ApJ 548(1), 296–309 (2001). https://doi.org/10.1086/318651. arXiv:astro-ph/0008146 [astro-ph]
J.C. Weingartner, B.T. Draine, D.K. Barr, Photoelectric emission from dust grains exposed to extreme ultraviolet and X-ray radiation. ApJ 645(2), 1188–1197 (2006). https://doi.org/10.1086/504420. arXiv:astro-ph/0601296 [astro-ph]
R.J. Weymann, S.L. Morris, C.B. Foltz et al., Comparisons of the emission-line and continuum properties of broad absorption line and normal quasi-stellar objects. ApJ 373, 23 (1991). 10.1086/170020 DOI: 10.1086/170020
M. Wielgus, M. Moscibrodzka, J. Vos et al., Orbital motion near Sagittarius A∗. Constraints from polarimetric ALMA observations. A &A 665, L6 (2022). 10.1051/0004-6361/202244493. arXiv:2209.09926 [astro-ph.HE] DOI: 10.1051/0004-6361/202244493
D. Williamson, S. Hönig, M. Venanzi, Radiation hydrodynamics models of active Galactic nuclei: beyond the central parsec. ApJ 897(1), 26 (2020). 10.3847/1538-4357/ab989e. arXiv:2006.00918 [astro-ph.GA] DOI: 10.3847/1538-4357/ab989e
B.J. Wills, H. Netzer, D. Wills, Broad emission features in QSOs and active galactic nuclei. II. New observations and theory of Fe II and HI emission. ApJ 288, 94–116 (1985). https://doi.org/10.1086/162767
G. Witzel, B.N. Sitarski, A.M. Ghez et al., The post-periapsis evolution of Galactic center source G1: the second case of a resolved tidal interaction with a supermassive black hole. ApJ 847(1), 80 (2017). 10.3847/1538-4357/aa80ea. arXiv:1707.02301 [astro-ph.GA] DOI: 10.3847/1538-4357/aa80ea
G. Witzel, G. Martinez, S.P. Willner et al., Rapid variability of Sgr A* across the electromagnetic spectrum. ApJ 917(2), 73 (2021). 10.3847/1538-4357/ac0891. arXiv:2011.09582 [astro-ph.HE] DOI: 10.3847/1538-4357/ac0891
D. Wylezalek, A. Vayner, D.S.N. Rupke et al., First results from the JWST early release science program Q3D: turbulent times in the life of a z 3 extremely red quasar revealed by NIRSpec IFU. ApJ 940(1), L7 (2022). 10.3847/2041-8213/ac98c3. arXiv:2210.10074 [astro-ph.GA] DOI: 10.3847/2041-8213/ac98c3
Y. Xie, L.C. Ho, The ionization and destruction of polycyclic aromatic hydrocarbons in powerful quasars. ApJ 925(2), 218 (2022). 10.3847/1538-4357/ac32e2. arXiv:2110.09705 [astro-ph.GA] DOI: 10.3847/1538-4357/ac32e2
Q. Yang, X.B. Wu, X. Fan et al., Discovery of 21 new changing-look AGNs in the Northern sky. ApJ 862(2), 109 (2018). 10.3847/1538-4357/aaca3a. arXiv:1711.08122 [astro-ph.GA] DOI: 10.3847/1538-4357/aaca3a
F. Yuan, R. Narayan, Hot accretion flows around black holes. ARA &A 52, 529–588 (2014). 10.1146/annurev-astro-082812-141003. arXiv:1401.0586 [astro-ph.HE] DOI: 10.1146/annurev-astro-082812-141003
M. Zajaček, V. Karas, A. Eckart, Dust-enshrouded star near supermassive black hole: predictions for high-eccentricity passages near low-luminosity galactic nuclei. A &A 565, A17 (2014). 10.1051/0004-6361/201322713. arXiv:1403.5792 [astro-ph.GA] DOI: 10.1051/0004-6361/201322713
M. Zajaček, S. Britzen, A. Eckart et al., Nature of the Galactic centre NIR-excess sources. I. What can we learn from the continuum observations of the DSO/G2 source? A &A 602, A121 (2017). https://doi.org/10.1051/0004-6361/201730532. arXiv:1704.03699 [astro-ph.GA]
M. Zajaček, B. Czerny, M.L. Martinez-Aldama et al., Time-delay measurement of Mg II broad-line response for the highly accreting quasar HE 0413–4031: implications for the Mg II-based radius-luminosity relation. ApJ 896(2), 146 (2020). 10.3847/1538-4357/ab94ae. arXiv:2005.09071 [astro-ph.GA] DOI: 10.3847/1538-4357/ab94ae
M. Zajaček, B. Czerny, M.L. Martinez-Aldama et al., Time delay of Mg II emission response for the luminous quasar HE 0435–4312: toward application of the high-accretor radius-luminosity relation in cosmology. Astrophys. J. 912(1), 10 (2021). 10.3847/1538-4357/abe9b2. arXiv:2012.12409 [astro-ph.GA] DOI: 10.3847/1538-4357/abe9b2
R. Zamanov, P. Marziani, J.W. Sulentic et al., Kinematic linkage between the broad- and narrow-line-emitting gas in active Galactic nuclei. ApJ 576(1), L9–L13 (2002). https://doi.org/10.1086/342783. arXiv:astro-ph/0207387 [astro-ph]
L. Zhang, L.C. Ho, A. Li, Evidence that shocks destroy small PAH molecules in low-luminosity active Galactic nuclei. ApJ 939(1), 22 (2022). 10.3847/1538-4357/ac930f DOI: 10.3847/1538-4357/ac930f
S. Zhang, J. Ge, T. Ji et al., The 2175 Å bump features in FeLoBAL quasars: one indicator of MW-like dust in the nuclear region of quasars. A &A 663, A63 (2022). 10.1051/0004-6361/202142476. arXiv:2203.03789 [astro-ph.GA] DOI: 10.1051/0004-6361/202142476
J.H. Zhao, M.R. Morris, W.M. Goss et al., Dynamics of ionized gas at the Galactic center: very large array observations of the three-dimensional velocity field and location of the ionized streams in Sagittarius A West. ApJ 699(1), 186–214 (2009). 10.1088/0004-637X/699/1/186. arXiv:0904.3133 [astro-ph.GA] DOI: 10.1088/0004-637X/699/1/186
J.H. Zhao, R. Blundell, J.M. Moran et al., The high-density ionized gas in the central parsec of the galaxy. ApJ 723(2), 1097–1109 (2010). 10.1088/0004-637X/723/2/1097. arXiv:1009.1401 [astro-ph.GA] DOI: 10.1088/0004-637X/723/2/1097
